Answer Posted / deepthi

i want rrb material for preparing exam..
total syllabus i want . can u send some details of the
rrb.............

thanking you.

Two initially identical samples A and B of pure germanium are doped with donors to concentrations of 1*10, 20 m-3 and 3*10, 20 m-3 respectively. If the hole concentration in A is 9*10 12 m-3, then the hole concentration in B at the same temperature will be

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